baber/WOPTO huggingface dataset:
Patent GB-1410401-A (GB)
Title: Mechanism for opening envelopes
IPC: B43M7/00
Filed: 1973-04-27
Abstract: 1410401 Unpacking THOR DAHL Inc 27 April 1973 [14 June 1972] 20139/73 Heading B8C [Also in Division B6] Sealed envelopes 1 are opened by applying a chemical to degrade edges of the envelopes which are then moved past means for abrading and removing the degraded edges. A stack of envelopes, pre-treated with a chemical, are loaded into a tray 10 having a front wall 14, an adjustable back wall 15 and downwardly pivotable side walls (20), Fig. 3 (not shown). The tray is then inverted into a tunnel 30 and moved therethrough by drive teeth 39 on a chain 38, the teeth engaging a pivotable finger 24 on the tray. The processing operation can only be started when microswitches 41 sense that tunnel doors 32 are closed and microswitch 40a senses the tray to be in the correct position. At station A, a developing chemical, e.g. acid, is sprayed on to the pre-treated envelope edges to initiate degradation. At station B warm air is blown to dry the edges and at station C heaters cure the envelope edges. Station D is provided with rotary brushes which remove the degraded edges. A further station removes base fibres and dust by suction.
Patent GB-277472-A (GB)
Title: Improvements in and relating to sheet metal structures
IPC: B21D53/00
Filed: 1926-08-16
Abstract: 277,472. MacKenzie, K. D. Aug. 16, 1926. Hollow-ware; furniture; plates and sheets.- Sheets having corrugations of dovetail or like form for making polygonal tanks, bins, and other receptacles, garden and other out-door seats, motor-car seats, framework, &c., are bent transversely of the corrugations by first Battening or pressing together the corrugations along a line transversely of the corrugations and then bending the sheet along this line. In forming seats the sheet is flattened at A and then bent, the flattening causing the bottoms a<1> of the hollows of the corrugations to bulge inwards and the top surfaces a<2> of the raised parts to bulge outwards. The parts may be similarly bent at b<1> and c'.
Patent GB-983068-A (GB)
Title: Transistor amplifiers
IPC: H03F3/30
Filed: 1962-05-25
Abstract: 983,068. Magnetic recording heads; local circuits for. J. S. MURRAY. Aug. 20, 1963 [May 25, 1962], No. 20308/62. Heading G5R. [Also in Division H3] The output of a transistor amplifier (see Division H3) is coupled via a resistor 38 to a magnetic recording head, 37 the inductance L of the head being tuned by a shunt capacitor 39 to the cutoff frequency (35 kc/s). The resistor is made equal to #L/2C so as to give a maximally flat response. Specifications 809,207 and 952,161 are referred to.
Patent GB-774679-A (GB)
Title: Manufacture of new bactericidal and fungicidal compounds and preparations containingthem
IPC: A23L3/3526
Filed: 1953-07-22
Abstract: The invention comprises new water-soluble quaternary ammonium salts of the general formula: <FORM:0774679/IV(b)/1> in which X- is the anion of an acid giving a water-soluble compound with the quaternary ammonium cation.  They may be prepared by reacting dodecyl - di - (b - hydroxyethyl)-amine with a benzylating agent of the formula: <FORM:0774679/IV(b)/2> Alternatively they may be prepared by reacting dodecyl - benzyl - b  - hydroxy ethyl amine with a compound of formula X.CH2CH2Oh.  Suitable benzylating agents are, for example, benzyl esters of inorganic acids such as benzyl nitrate and benzyl halides.  In the example dodecyl-di-(b -hydroxyethyl)-amine is heated with benzyl chloride to give the corresponding quaternary ammonium salt.  The dodecyl-di-(b -hydroxyethyl) amine used as starting material may be obtained by introducing two mols. of ethylene oxide into one mol. of dodecylamine at about 150-170 DEG  C., or by condensing dodecyl bromide with diethanolamine.ALSO:Water-soluble quaternary ammonium salts of the general formula <FORM:0774679/VI/1> in which X is the anion of an acid giving a water-soluble compound with the quaternary ammonium anion may be used alone, in solution in hard water, or with other liquid or solid diluents as bactericides and/or fungicides.  X may be, for example, a nitrate, chloride or bromide radical.
Patent GB-837934-A (GB)
Title: Improvements in or relating to push-button electric selector switches
Inventor: ROBINSON FRANCIS BRIAN
IPC: H03J5/32
Filed: 1958-06-26
Abstract: 837,934. Mechanical switches, without quick action; regulating switches. STANDARD TELEPHONES & CABLES Ltd. June 26, 1958, No. 20494/58. Class 38 (5). A selector switch comprises a rod 5 actuated by a push-button 9 against a compressed spring 15, and carrying a spring-controlled pivoted pawl 17 with a recess 22 which allows it to engage and rotate a ratchet wheel 23 when the button is depressed. Rotation of the wheel 23 moves an attached wiper 31 and contact 32 round a switch wafer 33, members 23, 31 being retained in each position by a spring-urged ball 26 which engages the teeth of a star wheel 25, moving in a slotted tube 28. Reverse rotation is produced by depressing another button 10, the action being similar to that described above. The position of the contact 32 is indicated by a numbered drum 29 through an aperture in the front panel of a control box (Fig. 2, not shown). The box houses two switches as shown in Fig. 1, the setting of which controls the output voltage of a servo system which drives a motor for producing any one of a number of frequency channels (Fig. 4, not shown).
Patent GB-591790-A (GB)
Title: Contact-protecting arrangement in electric interrupters
IPC: H01H33/59
Filed: 1944-10-25
Abstract: 591,790. Sparking preventing in switches. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Oct. 25, 1944, No. 20710. Convention date, Nov. 5, 1943. [Class 38 (v)] The migration of material from one contact to the other of a pair of oscillating contacts 1 in a direct current circuit, is prevented by generating an alternating current through the contacts. This is done by connecting the contact-pair in parallel with a condenser 2, connecting an air-cored inductance 3 in series with condenser and contacts, and shunting a second condenser 4 across the contacts, inductance, and condenser 2. An oscillating circuit is thus provided, the characteristics of which can be regulated by varying the inductance and condensers.
Patent GB-1090195-A (GB)
Title: Preparation of a silica-alumina gel
IPC: B01J21/12
Filed: 1966-05-10
Abstract: A method of washing a SiO2-Al2O3 gel comprises washing the gel with (1) an aqueous solution substantially free from alkali metal ions and having a pH from 2 to 7, and then (2) washing the gel with an aqueous ammonium carbonate solution which is substantially free of alkali metal and sulphate ions to remove sulphate ions from the gel.  Wash (1) may be with aqueous Al2(SO4)3, (NH4)2SO4 or HCl.  Prior to washing with (NH4)2CO3 the gel may be washed with NH4OH. Additionally washing may be effected with deionised water.
Patent GB-359401-A (GB)
Title: Improvements in or relating to lubricating systems of internal combustion engines
IPC: F16N39/00
Filed: 1930-07-10
Abstract: 359,401. Venting lubricant tanks. CARTER, B. C., Royal Aircraft Establishment, South Farnborough, Hampshire. July 10, 1930, No. 20883. [Class 12 (iii).] In a lubricating system for an internal-combustion engine a baffle of fine mesh is fitted across the air space in the oil tank or other container above an inlet for the mixture of air and oil and below an air vent, for permitting the escape of air but preventing the overflow of froth through the vent. Oil from a scavenge pump passes through a delivery pipe 20, Fig. 2, and a cleaner and cooler 2 and is delivered through a pipe 21 to a tank 1. Between the inlet to the tank 1 and an air vent 9 is a baffle 26 of gauze. A relief valve 22 in the pipe 20 communicates with the bottom of the tank. In a modification an oil cleaner 3, Fig. 1, surrounded by a cooling chamber 7 as described in Specification 310,550, [Class 29, Cooling &c.], is mounted upon a tank 1. Oil is supplied to the cleaner inlet 4 through an external inlet 13 the connecting pipe having a relief valve 14 discharging into the tank 1. A vent 9 is located, above the cleaner, at the top of the cooling chamber, and a reticulated domeshaped baffle 10 is fitted just below the vent. To prevent the accumulation of froth around the cleaner a second baffle 11 may be fitted below it. Oil from the cooling chamber 7 drains through an outlet 12 in the baffle 11 to the tank 1. The baffle consists of a cage having wire gauze sides 16 and bottom 11. The gauze bottom 11 may be replaced by sheet metal. Small holes 17 may be formed in the cage above the gauze sides 16 to permit air to escape from the tank 1 and so to the vent 9 or alternatively a vent with a gauze baffle may be fitted to the tank itself. With the alternative arrangement the vent 9 and baffle 10 in the cooler may be omitted.
Patent GB-287386-A (GB)
Title: Change-speed-gearing
IPC: F16H3/24
Filed: 1927-08-08
Abstract: 287,386. Seidel, A. Aug. 8, 1927. Variable-speed gearing of the kind comprising aligned driving and driven shafts e, g, a parallel countershaft f, and toothed gears slidable to change speed is modified to facilitate change from direct to highest indirect drive. The shaft f is constantly driven through a pair h<1>, h<2>. In an arrangement shown in Fig. 1, a pair of meshing gears i<1>, i<2> are yoked so as to slide together with a separate clutch member a<3>. With the yoke m at extreme left, the clutch member a<5> engages simultaneously clutch dogs a<1>, a<2> on the shafts e, g, respectively, effecting direct driving. In changing down, on a first movement, the loose gear i<1> is picked up by a clutch member b<3> before the elements a<1>, a<3> disengage. That is the pair i<1>, i<2> are in driving relation with shaft f and are set in motion while shafts e, g are still clutched. Continued movement to the right disconnects the direct drive, and friction between the elements a<3>, i<2> acts to synchronize teeth b<2> on the gear i<2> with teeth b<1> on the shaft g, which are ultimately engaged to effect first indirect drive. Another speed and reversal are effected by moving a gear k<2>. In another arrangement shown in Fig. 2, in the change down, a loose gear c picks up and is rotated by a gear d on the countershaft before the directdrive clutch e is disengaged. The gear c is subsequently entrained by the engagement of clutch members i<1>, i<2>. For lower speeds, the clutch i<1>, i<2> is disconnected and a pair of gears l<1>, l<2> moved.
Patent GB-1347995-A (GB)
Title: Wheel support for an engine propelled road vehicle
IPC: F16C19/18
Filed: 1971-04-19
Abstract: 1347995 Bearings SKF INDUSTRIAL TRADING & DEVELOPMENT CO NV 19 April 1971 [5 Feb 1970] 20915/71 Heading F2A The subject-matter of this Specification is substantially the same as that described in Specification 1,347,996, but the claims relate to the pitch diameter of the rolling elements being larger than the axial width of the unit between the planes perpendicular to the axis and defining the outermost confines of the members. In an additional embodiment, Fig. 4, the invention is applied to a driven wheel. References to Specifications 1,347,997 and 1,347,998 are made.
Patent GB-278487-A (GB)
Title: Improvements in or relating to piston pins
IPC: F16J1/18
Filed: 1926-08-26
Abstract: 278,487. Talbot, E. Aug. 26, 1926. Pistons; connecting-rods.-Endwise movement of a gudgeon pin is prevented by means of a removable tongue at one or both ends of the gudgeon-pin. The tongue 7, Fig. 1, is passed through slots in the gudgeon-pin boss 4 and is secured to the skirt by a stud 12, or otherwise. Alternatively, the tongue may be secured to the under side of the gudgeon-pin boss, or the end 22, Fig. 3, of the tongue may be sprung into a hole in a lug 23 on the under side of the boss. In a modification the tongue is formed integrally with a spring clip, which embraces the exterior of the gudgeon-pin boss. In a piston having a detachable skirt 13, Fig. 2, the tongue lies in the space 14 between the skirt and the gudgeon-pin boss and is formed with lugs 16 engaging either the gudgeon-pin boss, or the lug 21 by which the skirt is secured to the boss. The lower end of the tongue is sprung into a groove 19 in the edge of the skirt. The tongues may be replaced by a spring ring threaded through slots in the gudgeon-pin bosses and engaging the interior of the skirt.
Patent GB-1244221-A (GB)
Title: Stabilised aromatic amines
Inventor: CUNDALL JOHN HENRY
IPC: B01D27/06
Filed: 1968-05-03
Abstract: 1,244,221. Stabilized aromatic amines. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 April, 1969 [3 May, 1968], No. 21037/68. Heading C2C. ' A stabilized aromatic amine composition comprises potassium ethyl xanthate incorporated into one of the aromatic amines 4-chloro- 2-methylaniline or o-anisidine. The proportion of potassium ethyl xanthate is preferably from 0-001 to 0À5% by weight of the aromatic amine. Preferably the xanthate is incorporated into freshly distilled amine, for example by distilling the amine into a receiver containing potassium ethylxanthates.
Patent GB-1148577-A (GB)
Title: Paper base planographic printing plates
Inventor: WILLIAMS HENRY PRESTON
IPC: G03G13/28
Filed: 1966-05-12
Abstract: 1,148,577. Paper-base planographic printing plates. APPLETON COATED PAPER CO. 12 May, 1966, No. 21041/66. Heading B6C. [Also in Division B2] A planographic printing plate comprises a paper base with a dried, insolubilized coating layer providing the printing surface, the coating being formed from an aqueous dispersion of 5 to 10 parts by weight of a protective colloid of polyvinyl alcohol or hydroxyethylated starch; 0À3 to 10 parts by weight of a mixture containing 55 to 85% ethyl acrylate, 45 to 20% acrylonitrile and 0À5 to 4% methacrylic acid; 18 to 60 parts by weight of inert mineral pigment; 0À2 to 5 parts by weight of melamine formaldehyde resin or melamine resin in combination with melamine formaldehyde resin, or a sufficient quantity of any other formaldehyde donor to insolubilize the protective colloid; and from 1À5 to 30 parts by weight of a mixture containing 1 to 4 parts of zinc acetate and at least 1 part of aluminium chloride or ferric chloride or chromium chloride. The inert pigment is preferably kaolin clay. The plate is made by coating the paper base web with the aqueous dispersion, and then drying; the opposite side of the paper base may be coated to prevent curl and impart dimensional stability.
Patent GB-678487-A (GB)
Title: Improvements relating to cast iron
IPC: C21C1/10
Filed: 1950-08-25
Abstract: Malleable iron is produced by subjecting a white iron casting containing 0.03 to 0.5 per cent magnesium to a malleabilizing heat treatment to decompose massive carbides to spheroidal graphite and iron.  The iron may contain 1.8 to 4 per cent C, 0.4-4 per cent Si, 0.3-5 per cent Ni, 0-2 per cent Cu, .05-2 per cent Mn and below 0.02 per cent S.  The heat treatment consists in heating the iron to 840-980 DEG C for 5 to 15 hours and may include a further heating at a temperature below the gamma-alpha transformation of the iron. Specification 630,070 is referred to.
Patent GB-883801-A (GB)
Title: Apparatus for the stamping of photographic papers
IPC: B41K3/66
Filed: 1958-07-01
Abstract: 883,801. Charging and discharging condensers; electromagnets. AGFA A.G. July 1, 1958 [July 10, 1957], No. 21113/58. Classes 35 and 38 (4). [Also in Group XVI] In an electromagnetically actuated apparatus for the stamping of photographic papers the electromagnet of the stamping apparatus is arranged for inclusion in an electrical circuit whereby it can be energized briefly by a short current surge during the stamping stroke. Type (not shown) are mounted in a housing 18 and project through an opening 19 in a deskplate 1. A cylindrical guide 6 is mounted in a housing 2 above the opening 19 and an impression member 5 is slidable therein, being secured to a screw cap 8 at the upper end of the guide by a tension spring 7. The member 5 incorporates the armature of an electromagnet 10 which surrounds the lower part of the guide 6. Paper to be stamped is inserted in a guideway 4 and engages a conical feeler 17 mounted on a lever 16 pivoted at 15. The engagement of the paper with the feeler 17 rocks the lever 16 upwards and an arm 14 thereon actuates a microswitch 12 (Fig. 2) mounted in a housing 11. This causes the electromagnet 10 to be energized and the impression member 5 strikes the paper in the guideway 4, forcing it into contact with the type in the opening 19. The electromagnet circuit is fed from an A.C. supply 20, 21, through a rectifier bridge 22 and includes a smoothing capacitor 25, a resistance 27 and a chargeable capacitor 26. Insertion of the paper in the guideway 4 causes the switch 12 to engage a contact 29 so that a short, but very powerful surge of current passes through the electromagnet 10 from the rectifier, this surge terminating and the member 5 being returned to its Fig. 1 position by the spring 7 when the capacitor 26 is fully charged. When the paper is removed the switch 12 returns to rest position in which it engages a contact 28 and the capacitor 26 discharges through the resistance 27. In a modification the electromagnet is energized as the capacitor 26 discharges. A hole 30 in the wall of the guide 6 vents the interior of the guide but is closed by the member 5 when the latter is in its rest position so that rearward movement of the member is damped by the compression of air in the upper end of the guide.
Patent GB-656205-A (GB)
Title: Improvements in or relating to apparatus for indicating particle size distribution
IPC: G01N15/04
Filed: 1948-08-11
Abstract: 656,205. Electric weighing - machines. SHARPLES CORPORATION. Aug. 11, 1948, No. 21181. Convention date, Aug. 15, 1947. [Class 40 (i)] [Also in Groups XVIII, XL (b) and XL (c)] In a device for measuring the rate of fall of powder in a gaseous medium to enable its particle-size-distribution to be computed, the weight accumulating at the foot of a sedimentation tower over a period of time is indicated by an electrically-balanced weighing- machine, with a photo-cell or capacitor pick-up. The balancing force may be electromagnetic or electrostatic. Construction. The weighing machine is enclosed in a housing 11 at the foot of the tower 10 and comprises a balance arm 14, pivoted at 15, and carrying at one end a pan 12 to collect the falling powder and at the other end an annular electromagnetic balancing-coil 17 co-operating with two horse-shoe permanent magnets 149, 150, Fig. 9. An aluminium disc 148 may be attached to the coil to provide electromagnetic damping. Construction of the balance including adjustable torsion wire pivoting of the arm is shown in detail, Figs. 7, 8, 10 (not shown). Control circuit. Photo-cell pick-up.-Light from a source 25 is reflected from a mirror 22 attached to the balance-arm on to a differential photo-electric head comprising two prisms 31, 32 arranged to split the light beam and pass it to a pair of photo-cells 33, 34. As the beam is deflected by the mirror 22, one cell receives more light than the other. Alternatively a single inverted prism may be used to split the beam, Fig. 6 (not shown). The differential output from the photo-cell-circuit is connected to a phase-amplitude sensitive amplifier 39 to energize the balancing coil 17. A meter 42 in the coil circuit indicates the weight. The amplifier 39 may be a simple push-pull cathodefollower amplifier, fed from a conventional stabilized power pack, Fig. 17 (not shown), or may have several stages of amplification with negative feed-back to prevent hunting of the balance (see Group XL (c)). Capacitor pick-up, Fig. 19. Alternatively the pick-up may comprise a pair of variable capacitors each having one electrode 400, 401, carried by the balance arm. The capacitors are connected in a bridge circuit fed by an oscillator 405. The output is amplified at 411 and passed through a phase/amplitude sensitive amplifier 412 to energize the balancing coil. The Specification states that the output may be connected to capacitors on the balance arm to provide an electrostatic balancing force. The construction of devices for introducing the powder sample into the tower in dispersed, de-aggregated form by air blast or spring action is shown in detail, Fig. 12 to 16 (not shown). The spring acting device is used when the tower is operating under vacuum to avoid entry of the air charge. An example of the method of computing particle-size-distribution from specimen test figures is described with reference to graphs, Fig. 20, 21 (not shown).
Patent GB-1096764-A (GB)
Title: New gonane derivatives, processes for their preparation, and compositions containing them
IPC: C07J1/00
Filed: 1966-05-13
Abstract: Novel 13b -alkyl-gona-1,3,5(10)-trienes of the general formula <FORM:1096764/C2/1> wherein R1 and R3 are each a hydrogen atom or an alkyl group containing from 1-7 carbon atoms or an acyl group containing from 1-18 carbon atoms; R2 is a hydrogen or a halogen atom; and Z is an alkyl group containing from 1-4 carbon atoms; provided that R2 and R3 are not both hydrogen atoms when R1 is an hydrogen atom or an alkyl group and Z is the methyl group are obtained by reacting a 16-hydroxymethylene - 13b  - alkyl - gona - 1,3,5(10 -trien-17-one of the general formula <FORM:1096764/C2/2> wherein R1, R2 and Z are as defined above, with hydroxylamine or a salt thereof.  The 17-ester is obtained by standard procedures. Pharmaceutical compositions having hypocholesterolemiant activity and containing the above compounds are administered orally, by injection or rectally.
Patent GB-326119-A (GB)
Title: Improvements in or relating to gas brackets and like fittings
IPC: F21V21/10
Filed: 1929-07-12
Abstract: 326,119. Pain, W. F., and Pain, W. H. July 12, 1929. Smut-catchers.-In an inverted incandescent gas burner a smut-catcher of heat resisting and preferably vitreous material is supported on an ornamental member 6 screwed on to a pipe 5 which screws into an upward vertical extension of the downtake 2 of the gas bracket. The smut-catcher is held in position by a loose-fitting ornamental member 8 and a knob 9 which screws on to and covers the upper end of the pipe 5.
Patent GB-622182-A (GB)
Title: Improvements in or relating to magnetic structures for electric apparatus
IPC: H01F27/25
Filed: 1947-08-07
Abstract: 622,182. Transformers. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 7, 1947, No. 21576. Convention date, Feb. 5, 1941. Drawings to Specification. [Class 38 (ii)] The subject-matter of this Specification is identical with that described in Specification 570,730.
Patent GB-1125035-A (GB)
Title: Improvements in and relating to deep button tufting
Inventor: DURRANT WALTER
IPC: B68G7/08
Filed: 1967-05-09
Abstract: 1,125,035. Upholstery. GEORGE HENSHER Ltd. 9 May, 1967, No. 21594/67. Addition to 1,107,098. Heading A4M. A resilient pad 36 is upholstered with buttons 31 using a jig 25-29 and associated pegs 10 for holding the buttons 31. The jig comprises a panel 25 with apertures 26 having diametrically opposed extension slots 27, 28 and a plate 29 disposed beneath the panel 25 for vertical movement by pneumatic rams 30. Each peg 10 has splayed resilient limbs 11, 12 extending from a root portion comprising a collar 13 with diametrically opposed lugs 22. The limbs 11, 12 are fitted with metal sleeves 14, 15 with inwardly directed end lips (16, 17, Fig. 2). The pegs 10 are first passed downwardly through the apertures 26 and rotated through 90 degrees to engage the lugs 22 beneath the panel 25. A button head 32 is seated on the top of each peg 10 which is then pressed downwardly through the aperture 26 to close the limbs 11, 12 so that the lips (16, 17) engage over the button head 32. Covers 35, 38 and an enclosed pad 38 with preformed holes 37 are then positioned on the panel 25 over the pegs 10 with the button heads 32 anchored by their spikes 33, 34 to the covers 35, 38. The rams 30 are actuated so that the plate 29 engages and lifts the pegs 10 and hence the pad 36 and cover assembly. The limbs 11, 12 are thus - allowed to splay to release the button heads 32 so that the pad and button assembly may be lifted off the pegs 10.